Adjustment buckle for a sling



FIG. 1 is a top, left, front perspective view of an adjustment buckle for a sling, with an associated strap illustrated in broken lines, showing our new design;

FIG. 2 is a top, right, front perspective view of the adjustment buckle of FIG. 1;

FIG. 3 is a bottom, left, front perspective view of the adjustment buckle of FIG. 1;

FIG. 4 is a bottom, right, rear perspective view of the adjustment buckle of FIG. 1;

FIG. 5 is a right side elevation view of the adjustment buckle of FIG. 1, the left side is a mirror image thereof;

FIG. 6 is a front elevation view of the adjustment buckle of FIG. 1;

FIG. 7 is a rear elevation view of the adjustment buckle of FIG. 1;

FIG. 8 is a top plan view of the adjustment buckle of FIG. 1; and,

FIG. 9 is a bottom plan view of the adjustment buckle of FIG. 1.

The broken lines showing portions of the design in all figures are included for the purpose of illustrating environment and unclaimed features and forms not part of the claimed design. 

CLAIM The ornamental design for an adjustment buckle for a sling, as shown and described. 